# 声明集合两种方式
set1 = {'zhangsan', 'lisi', 'wangwu', 'wangwu'}
# set2 = set()
# print(type(set1))
# print(type(set2))
print(set1)

# 给你个['zhangsan','zhangsan','lisi'] 对列表快速去重
list1 = ['zhangsan', 'zhangsan', 'lisi']
set3 = set(list1)
set3 = list(set3)
print(set3)
